Long Gone is a Note in Deathloop.

Location

Found pinned to the entrance door of Julianna's Manor, if Colt visits the location after completing her instructions once during the first mission.

Transcript

Dear Colt,

While you were all 'hrng urf owie my head pfft sand' this morning, I was making my way to my favorite haunt in the heart of Blackreef.

How's your head now? Better? No?

Well.

It isn't all bad news.

This island's big enough for both of us.

Catch me if you dare.

Smooches,
Julianna

Colt Note

Julianna's not at her house.

DEATHLOOP NOTES
Aleksis Dorsey	PERFECTION - The Alpha Wolf's Delightful Amortality - YOU THINK YOU CAN MIX?
Charlie Montague	Aesthetics are Key - Envisioned Invasion - Feedback Loop - From the Minicom of Charlie Montague - Hi everyone! - Moist Note - Order of Operations - Safety Versus Death - The Classiest Pass - Theme: Audio Overdrive - Theme: Murder Mystery - Theme: Secret Society
Colt Vahn	'Rambin' Frank Spicer - Aleksis Dorsey - Charlie Montague - Dr. Wenjie Evans - Egor Serling - Fia Zborowska - Harriet Morse - Julianna Blake - Our Visionaries' Incredible Abilities! - The LPP - Welcome to Blackreef
Egor Serling	A Stopped Clock - Keys to an Enlightening First Day - Radial Fluctuations
Fia Zborowska	Aesthetics are Key - Baby's New Crib - Damp Note - Masquerade for Two - On Dreams - Paint-Smudged Missive - remember us
Frank Spicer	Hey, Hey, Miss J - LIVE at Stony Bar - More Than a Gun - Real Estate - Welcome to the Program
Harriet Morse	A Mindful Recovery - AEON Mission Assignment - Am I a Joke to You? - Bargaining Chips - Dear Diary - Elanor - Opportunity Knocked - The Constant - The Threshold - Turning the Screw - Uncertainty
Julianna Blake	A Reason to Love - ATTENTION EVERYBODY - Colt Watch - Long Gone - New Arrivals - Safety Card - Our Visionaries' Incredible Abilities! - Teachable Moment - THE ESSENTIAL YOU!
Wenjie Evans	A Feature, Not a Bug - ATTENTION ALL WENJIES - Constructive Feedback - Fine Work, Everyone! - Generous Instructions - Gifts from the Anomaly - Insider Access - Letter from Wenjie - Notes on Updaam's Cliffside Facility - Possible Side Effects - That Old Crank - To Reap What You Sow - Unfolded Directive - Unknown Unknowns - Wenjie HALPS the World
Eternalists	A Gap in the Vanguard - A Heckin Good Plan - Always Prepared - An Argument Against AEON - Anatoly's Pact of Smoke - Beer Goggles - Code of Conduct - Creative Constraints - Dead and Gone - DEAR VALUED CUSTOMERS - Disappointment - From the Machine - Gas Drainage Protocols - HEY GARBAGE GUY - How the Jingle Jangles - I Got Nothing - In The Weeds - KEEP OUT - Living Deja-Vu - Message to Otto - Neglected Note - Scrawled Screed - Scribbled Invoice - Scribbled Notes - Slapdash Invitation - Sparky Please - The Pact of Smoke - The ULTIMATE Pre-Party - Towards Tomorrow - Unforeseen Consequences - Vanya's Pact of Smoke - Why We Can't Have Nice Things - WORRY NOT, DEAR CUSTOMERS!
Spies	Beetlequeen's Lucky Numbers - BQ Notes: A Confederacy of Morons - BQ Notes: Dinner For Two - BQ Notes: The Icebox - BQ Notes: The Rear Window - BQ Report: Cold Cuts - BQ Report: Gasbag Access - BQ Report: Horizon Bunkers - Dossier: The Captain - Intelligence Archives Access - Note from Redfowl - RF Note: The Fuck is This? - RF Report: Bristlebrush's Blueprints - RF Report: Coastal Disposal - RF Report: Stage Management - RF Report: That Jingle Jangle - SB Notes: Into the Wolf's Den - SB Notes: Puppy's Playthings - SB Report: Game Theories - Starbird's Lucky Numbers
Operation Horizon	CLASSIFIED INFORMATION - EYES ONLY - Isolation - MEMORIZE AND DELETE - On Schedule - Pilot Survival Projections - Reassignment - STRICTLY CONFIDENTIAL - Typed Form - Where the Power Lies
Lila Blake	Handwritten Letter - Handwritten Note - Never Forever
Miscellaneous	Bad Luck Mary's Lucky Day - The Final Nights of Bad Luck Mary - How Well Do YOU Know Blackreef? - The Yerhva - What is AEON?